Answer:
16. B
17. B
18. D
Explanation:
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Answer:
We only know it's there because we can see the effect of its gravity. Scientists study dark matter by looking at the effects it has on visible objects. Scientists believe that dark matter may account for the unexplained motions of stars within galaxies. Computers play an important role in the search for dark matter information.
Explanation:
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Answer:
<u>Skin:</u> The skin acts as a barrier against external agents that could affect such as microorganisms, changes in temperature, etc.
<u>Excretes waste:</u> The excretion process, is done mainly by lungs (release of carbon dioxide), kidneys (elimination of excess compounds such as nitrogen) and the skin (sweat regulates temperature but also regulates the concentration of salts within the body)
<u>Nails:</u> It protects the soft tissues surrounding the distal phalanx, but it also exerts pressure over on the digits which allows more precission in the movements.
<u>Kidneys:</u> Eliminate waste from the blood and regulate body fluids, by generating urine.
<u>Bladder:</u> In charge of storing the urine produced by the kidneys, for the urination process to be controlled and not so frecuent.
Explanation:
For a man weighing 185 pounds his minimum daily protein requirement is <u>67.118 g </u>of protein.
Proteins are integral to many bodily functions including cell growth,repair and as an alternative source of energy.
Further Explanation:
Large monomer chains form biological macromolecules that perform many essential body functions, including nucleic acids, carbohydrates, proteins, and lipids. These are organic molecules, meaning Carbons bonded to the elements oxygen (O), hydrogen (H), nitrogen (N), and phosphorus (P) are ringed or long-chain.
Proteins are structural support molecules consisting of long amino acid chains joined via peptide (CONH) bonds; these are 20 specific units arranged into several macromolecules. Amino acids are absorbed through digestion and incorporated into the cells of the body to form muscle organs that signal molecules and provide an alternative source of energy.
- First... convert 185 pounds to kilograms. Pounds (lbs) can be a measure of mass or weight, while Kilograms (kg) are a measure of mass.
- 1 pound= apprx 0.4535 kilograms. ∴ 185 lbs = 83.8975 kg
- Then, find the daily requirement for the person's mass in kg .....................<em>0.8 grams (g) of protein is recommended per kg of body weight. </em>∴ 0.8 × 83.91 = <u>67.118 g</u>
Learn more about proteins and carbohydrates at brainly.com/question/10744528
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